Operating System:
macOS High Sierra

Processor:
3.5GHz dual-core Intel Core i7, Turbo Boost up to 4.0GHz, with 64MB of eDRAM

System Memory:
16GB of 2133MHz LPDDR3 onboard memory

Storage:
256GB

Graphics:
Intel Iris Plus Graphics 650

Display:
Retina display
15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors

Wireless:
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

Battery:
Up to 10 hours wireless web

Up to 10 hours iTunes movie playback

Up to 30 days of standby time

Built-in 49.2-watt-hour lithium-polymer battery

61W USB-C Power Adapter

Weight:
3.02 pounds (1.37 kg)

Operating System:
macOS

Processor:
2.3GHz dual-core Intel Core i5, Turbo Boost up to 3.6GHz, with 64MB of eDRAM15W)

System Memory:
8GB of 2133MHz LPDDR3 onboard memory

Storage:
256GB

Graphics:
Intel Iris Plus Graphics 640

Display:
13.3-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1600 native resolution at 227 pixels per inch with support for millions of colors

Wireless:
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

Battery:
Up to 10 hours wireless web
Up to 10 hours iTunes movie playback
Up to 30 days of standby time

Weight:
Weight: 3.02 pounds (1.37 kg)

Operating System:
macOS High Sierra

Processor:
2.7GHz quad-core Intel Core i7, Turbo Boost up to 3.6GHz, with 8MB shared L3 cache
Configurable to 2.9GHz quad-core Intel Core i7, Turbo Boost up to 3.8GHz, with 8MB shared L3 cache

System Memory:
16GB of 2133MHz LPDDR3 onboard memory

Storage:
512GB

Graphics:
Radeon Pro 455 with 2GB of GDDR5 memory and automatic graphics switching
Intel HD Graphics 530
Configurable to Radeon Pro 460 with 4GB of GDDR5 memory and automatic graphics switching

Display:
Retina display
15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors

Wireless:
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

Battery:
Up to 10 hours wireless web
Up to 10 hours iTunes movie playback
Up to 30 days standby time
Built-in 76.0-watt-hour lithium-polymer battery
87W USB-C Power Adapter

Weight:
4.02 pounds (1.83 kg)

Operating System:
macOS High Sierra

Processor:
2.6GHz quad-core Intel Core i7, Turbo Boost up to 3.5GHz, with 6MB shared L3 cache

System Memory:
16GB of 2133MHz LPDDR3 onboard memory

Storage:
256GB

Graphics:
Radeon Pro 450 with 2GB of GDDR5 memory and automatic graphics switching
Intel HD Graphics 530

Display:
Retina display
15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors

Wireless:
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

Battery:
Up to 10 hours wireless web
Up to 10 hours iTunes movie playback
Up to 30 days standby time
Built-in 76.0-watt-hour lithium-polymer battery
87W USB-C Power Adapter

Weight:
4.02 pounds (1.83 kg)

Operating System:
macOS

Processor:
2.3GHz dual-core Intel Core i5, Turbo Boost up to 3.6GHz, with 64MB of eDRAM15W)

System Memory:
8GB of 2133MHz LPDDR3 onboard memory

Storage:
256GB

Graphics:
Intel Iris Plus Graphics 640

Display:
13.3-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1600 native resolution at 227 pixels per inch with support for millions of colors

Wireless:
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible

Battery:
Up to 10 hours wireless web
Up to 10 hours iTunes movie playback
Up to 30 days of standby time

Weight: 3.02 pounds (1.37 kg)